<!DOCTYPE html>
<html>
  <body>
    <select size="7">
      <optgroup id="ogone" label="opt group 1" style="color:green" disabled="disabled">
        <option id="one" style="color:green">Should be no red</option>
        <option id="two" style="color:green">Should be no red</option>
      </optgroup>
      <optgroup id="ogtwo" label="opt group 2" style="color:blue">
        <option id=three style="color:blue">Should be no red</option>
        <option id=four style="color:blue">Should be no red</option>
      </optgroup>
    </select>
  </body>
</html>
